More libtool madness: Every package which was using c++ and libtool fixup was linked...

More libtool madness: Every package which was using c++ and libtool fixup was linked against libstd++ even though if it should have been linked against uclibc++. This is fixed by providing a special version of libtool fixup for packages which should use uclibc++. Not pretty but functional. Packages linking against uclibc++ should use PKG_FIXUP:=libtool-ucxx instead of PKG_FIXUP:=libtool

Somebody should probably check all packages using c++ with a dependency on stdlibc++
if uclibc++ can be used instead now.

SVN-Revision: 16317